Displaying 20 results from an estimated 563 matches for "92093".
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92013
2002 Sep 18
2
No subject
...And how do I
download the OS10 version? My computer does not recognize the .gz
files on the website http://cran.r-project.org/bin/macosx/atlas/.
Many thanks,
Chris Wills
--
Christopher Wills
Professor of Biology
Division of Biological Sciences
University of California, San Diego
La Jolla CA 92093
Phone 858-534-4113
Fax 858-534-7108
e-mail cwills@ucsd.edu
--
Christopher Wills
Professor of Biology
Division of Biological Sciences
University of California, San Diego
La Jolla CA 92093
Phone 858-534-4113
Fax 858-534-7108
e-mail cwills@ucsd.edu
--============_-1179735293==_ma============
Conten...
2009 Oct 13
7
lapply() reccursively
Hi all,
I was wondering whether it is possible to use the lapply() function
to alter the value of the input, something in the spirit of :
a1<-runif(100)
a2<-function(i){
a1[i]<-a1[i-1]*a1[i];a1[i]
}
a3<-lapply(2:100,a2)
Something akin to a for() loop, but using the lapply() infrastructure.
I haven't been able to get rapply() to do this.
The reason is that the "real"
2006 Dec 10
4
sample "n" random positions from a matrix
Hi there,
I have a binary matrix (dim 100x100) filled with values 0 and 1. I need select a record "n" positions of that matrix when values are 1. How can I do that?
Thanks for all,
Miltinho
Brazil
---------------------------------
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2005 Sep 14
4
Converting coordinates to actual distances
...kage, but this does not seem to contain what I am
looking for. Ideally the output would be a triangular matrix of
distances.
Thanks in advance,
Paul Brewin
Paul E Brewin (PhD)
Center for Research in Biological Systems
University of California San Diego
9500 Gilman Drive MC 0505
La Jolla CA, 92093-0505
USA
Ph: 858-822-0871
Fax: 858-822-3631
2006 Mar 28
1
opendap/dods data retrieval
...developing a package
for accessing opendap/dods data using R. I see from the list archive
that there was some initial work done on this.
Thanks,
Paul Brewin
Paul E Brewin (PhD)
Center for Research in Biological Systems
University of California San Diego
9500 Gilman Drive MC 0505
La Jolla CA, 92093-0505
USA
Ph: 858-822-0871
Fax: 858-822-3610
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2006 Oct 20
2
Generating start values for nls
...mated 'heuristically', as is
claimed in their help files. Is there a similar R routine than may
produce reasonable start values?
Many thanks,
Paul Brewin
Paul E Brewin (PhD)
Center for Research in Biological Systems
University of California San Diego
9500 Gilman Drive MC 0505
La Jolla CA, 92093-0505
USA
Ph: 858-822-0871
Fax: 858-822-3610
2010 Nov 27
1
Bug in parseNamespaceFile or switch( , ... ) ?
...le:
[1] C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
>
Charles C. Berry Dept of Family/Preventive Medicine
cberry at tajo.ucsd.edu UC San Diego
http://famprevmed.ucsd.edu/faculty/cberry/ La Jolla, San Diego 92093-0901
2013 Apr 19
1
How to select the scale parameter for Gabor transform (Rwave)?
...Time", ylab="Signal", type="b")
cgtsinwave <- cgt(input=ys, nvoice=nf, freqstep=df, scale=scale, plot=TRUE)
Many thanks, Joaquin
--
Joaquin Rapela, PhD
Swartz Center for Computational Neuroscience
University of California San Diego
9500 Gilman Drive,
San Diego, CA 92093-0559
tel: (858) 822-7536
fax: (858) 822-7556
http://sccn.ucsd.edu/~rapela
2011 Jan 24
2
Help with expression
I have a problem with expressions. I am trying to create a title where
the parameter of interest is displayed as a Greek character. Which
parameter is being considered is stored in a character variable.
As an example, if I have
param <- "alpha"
and then do
plot(0, 0, main = bquote(Parameter==.(param)))
then in the title I get "Parameter = alpha",
whereas I want the
2010 Aug 05
3
eval-parse and lme in a loop
...e=lme(eval(parse(text=meanCol)) ~ Group + c1 + c1 + c3, data=df, random = ~ 1 | Subject)
print(summary(means.lmeWithCovariate))
print(anova(means.lmeWithCovariate))
}
Regards,
--
Colm G. Connolly, Ph. D.
Dept of Psychiatry
University of California, San Diego
9500 Gilman Dr. #0738
La Jolla, CA 92093-0738
Tel: +1-858-246-0684
2007 Aug 04
2
Mixture of Normals with Large Data
All:
I am trying to fit a mixture of 2 normals with > 110 million observations. I
am running R 2.5.1 on a box with 1gb RAM running 32-bit windows and I
continue to run out of memory. Does anyone have any suggestions.
Thanks so much,
Tim
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2005 Apr 22
1
Required Packages etiquette
...sed in many functions. Do I have to require MASS? Or should I just
include only "ginv" in the package?
Thank you for patience.
Giuseppe
------------------------------------------------------------
|Giuseppe Ragusa
|University of California, San Diego
|9500 Gilman Dr. 0508
|La Jolla, CA 92093
2008 May 27
4
help with simple function
I have a matrix of frequency counts from 0-160.
x<-as.matrix(c(0,1,0,0,1,0,0,0,1,0,0,0,0,1))
I would like to apply a function creating a new column (x[,2])containing
values equal to:
a) log(x[m,1]) if x[m,1] > 0; and
b) for all x[m,1]= 0, log(next x[m,1] > 0 / count of preceding zero values
+1)
for example, x[1,2] should equal log(x[2,1]/2) = log(1/2) = -0.6931472
whereas x[3,2] should
2008 Dec 11
3
check if a certain ... argument has been passed on to my user-defined function
Hi,
How can I check if a certain ... argument has been passed on to my
user-defined function or not?
foo <- function(data, ...)
{
### here I want to check whether xlab was passed with the ... arguments
### or if the ... arguments did not contain an xlab argument
}
I tried missing(xlab) , exists(xlab) and several other things but did not
find a solution.
TIA,
Mark
2010 Jul 07
3
How do I test against a simple null that two regressions coefficients are equal?
Hi there,
I run two regressions:
y = a1 + b1 * x + e1
y = a2 + b2 * z + e2
I want to test against the null hypothesis: b1 = b2. How do I design the test?
I think I can add two equations together and divide both sides by 2:
y = 0.5*(a1+a2) + 0.5*b1 * x + 0.5*b2 * z + e3, where e3 = 0.5*(e1 + e2).
or just y = a3 + 0.5*b1 * x + 0.5*b2 * z + e3
If I run this new regression, I can test against
2008 Jan 23
4
image question
Hi,
I have a question regarding the image function. Is there a way to specify a
separate color set for each column in the matrix?
TIA,
ajar.
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2006 Dec 31
4
Does SQL group by have a heavy duty equivalent in R
I have hundreds of humans who have undergone SNP genotyping at hundreds of
loci. Some have even undergone the procedure twice or thrice (kind of an
internal control).
So obviously I need to find those replications, and confirm that the results
are the same. If there is discordance then I need to address it.
I tried to use the aggregate function
nr.attempts
2006 May 16
2
retaining character matrices when combining into data frames
...ish what this
task but it seems that this argument was removed some time ago. Is
there a more attractive alternative available now?
Thanks very much,
Satoshi
__________
Satoshi Takahama
Scripps Institution of Oceanography
Center for Atmospheric Science
9500 Gilman Drive, Dept. 0221
La Jolla, CA 92093
858-531-5328
2005 Jan 12
2
?"=" (Windows) (PR#7504)
?"=", ?"==", ?"!=", ?">=", and ?"<=" sends me to the documentation for
?help on Windows, while returning the correct documentation on Linux.
Robert
> version
_
platform i386-pc-mingw32
arch i386
os mingw32
system i386, mingw32
status
major 2
minor
2011 Dec 21
4
qqnorm & huge datasets
Hi,
When qqnorm on a vector of length 10M+ I get a huge pdf file which
cannot be loaded by acroread or evince.
Any suggestions? (apart from sampling the data).
Thanks.
--
Sam Steingold (http://sds.podval.org/) on Ubuntu 11.10 (oneiric) X 11.0.11004000
http://mideasttruth.com http://honestreporting.com http://camera.org
http://openvotingconsortium.org http://pmw.org.il